﻿namespace Grand.SharedKernel.Extensions;

public static class ExtendedLinq
{
    public static bool ContainsAny<TSource>(this IEnumerable<TSource> source, IEnumerable<TSource> values)
    {
        return source.Any(s => values.Contains(s));
    }

    public static IEnumerable<IEnumerable<T>> CartesianProduct<T>(
        this IEnumerable<IEnumerable<T>> sequences)
    {
        IEnumerable<IEnumerable<T>> emptyProduct = [[]];
        return sequences.Aggregate(
            emptyProduct,
            (accumulator, sequence) =>
                from accseq in accumulator
                from item in sequence
                select accseq.Concat([item]));
    }

    public static async Task<bool> AllAsync<T>(this IEnumerable<T> source, Func<T, Task<bool>> predicate)
    {
        foreach (var item in source)
            if (!await predicate(item))
                return false;
        return true;
    }

    public static async Task<bool> AnyAsync<T>(this IEnumerable<T> source, Func<T, Task<bool>> predicate)
    {
        foreach (var item in source)
            if (await predicate(item))
                return true;
        return false;
    }
}